Using the OpenCPN GPX utility and the Chart Work - Piloting program is it possible to do on an electronic nautical chart the work you do in a traditional way.
Piloting and coastal fix
Advanced piloting techniques - Currents
Currents Drift and Set
Lasheras
Ciclonic method (820. Determining Track Made Good by Plotting Running Fixes. Bowditch-American Practical Navigator.)
Coastal navigation
Fix by simultaneous Distance and Bearing of same object. Distance by: